LOFAR MSSS: The Scaling Relation between AGN Cavity Power and Radio Luminosity at Low Radio Frequencies

Abstract

We present a new analysis of the widely used relation between cavity power and radio luminosity in clusters of galaxies with evidence for strong AGN feedback. We study the correlation at low radio frequencies using two new surveys - the First Alternative Data Release of the TIFR GMRT Sky Survey (TGSS ADR1) at 148 MHz and LOFAR's first all-sky survey, the Multifrequency Snapshot Sky Survey (MSSS) at 140 MHz. We find a scaling relation $P_{\mathrm{cav}}\propto L_{148}^{\beta }$, with a logarithmic slope of $\beta =0.51\pm 0.14$, which is in good agreement with previous results based on data at 327 MHz. The large scatter present in this correlation confirms the conclusion reached at higher frequencies that the total radio luminosity at a single frequency is a poor predictor of the total jet power. We show that including measurements at 148 MHz alone is insufficient to reliably compute the bolometric radio luminosity and reduce the scatter in the correlation. For a subset of four well-resolved sources, we examine the detected extended structures at low frequencies and compare with the morphology known from higher frequency images and Chandra X-ray maps. In Perseus we discuss details in the structures of the radio mini-halo, while in the 2A 0335+096 cluster we observe new diffuse emission associated with multiple X-ray cavities and likely originating from past activity. For A2199 and MS 0735.6+7421, we confirm that the observed low-frequency radio lobes are confined to the extents known from higher frequencies. This new low-frequency analysis highlights the fact that existing cavity power to radio luminosity relations are based on a relatively narrow range of AGN outburst ages. We discuss how the correlation could be extended using low frequency data from the LOFAR Two-metre Sky Survey (LoTSS) in combination with future, complementary deeper X-ray observations.

References in corpus (18)

• Heating Hot Atmospheres with Active Galactic Nuclei
• Shocks and cold fronts in galaxy clusters
• The LOFAR Two-metre Sky Survey - I. Survey Description and Preliminary Data Release
• GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey I: A low-frequency extragalactic catalogue
• Chandra temperature profiles for a sample of nearby relaxed galaxy clusters
• The Quiescent Intracluster Medium in the Core of the Perseus Cluster
• The VLA Low-frequency Sky Survey
• The Very Large Array Low-frequency Sky Survey Redux (VLSSr)
• LOFAR/H-ATLAS: A deep low-frequency survey of the Herschel-ATLAS North Galactic Pole field
• Do radio core-halos and cold fronts in non major merging clusters originate from the same gas sloshing?
• Numerical modelling of the lobes of radio galaxies in cluster environments II: Magnetic field configuration and observability
• Cycling of the powerful AGN in MS 0735.6+7421 and the duty cycle of radio AGN in Clusters
• Ionized nebulae surrounding brightest cluster galaxies
• LOFAR imaging of Cygnus A -- Direct detection of a turnover in the hotspot radio spectra
• VLSS Redux: Software Improvements applied to the Very Large Array Low-frequency Sky Survey
• Spectral ageing in the era of big data: integrated vs resolved models
• Isothermal shocks in Abell 2199 and 2A 0335+096?
• Star Formation, Radio Sources, Cooling X-ray Gas, and Galaxy Interactions in the Brightest Cluster Galaxy in 2A0335+096

Cited by in corpus (7)

• LOFAR Observations of X-ray Cavity Systems
• Constraining the AGN duty cycle in the cool-core cluster MS 0735.6+7421 with LOFAR data
• Measuring cavity powers of active galactic nuclei in clusters using a hybrid X-ray-radio method -- A new window on feedback opened by subarcsecond LOFAR-VLBI observations
• A LOFAR view into the stormy environment of the galaxy cluster 2A0335+096
• Powerful Radio Sources in the Southern Sky. I. Optical Identifications
• Cosmological Simulation of Galaxy Groups and Clusters-II: Studying Different Modes of Feedback through X-ray Observations
• Extended Radio Structures and a Compact X-ray Cool-Core in the Cluster Source PKS 1353-341